ESAB LAS 315 LAS 400 feeder MEJ 30 is included to help you with light production applications. It offers 40 voltage settings, separate mains switch with indicator lamp, cooling fan, and a mode switch for continuous, intermittent, or spot welding. The welding current is adjustable, and the burn-back time and gas post-flow can also be adjusted. The pressure and feed rollers have cogs to ensure uniform wire feed. Topflex power sources accept 300 mm wire reels, have a shelf for the gas cylinder, castors at the front, and large rubber wheels at the rear.